--- title: "Prism Launcher How-To — Exit Code Fixes, Shader Setup & World Migration | Prism Launcher for Windows" description: "Step-by-step fixes for Exit Code 1 and -1, installing Iris/Complementary shaders, importing MultiMC folders, and adding offline accounts. Open-source Minecraft launcher for Windows 10 and 11. Download at /download." canonical: https://prismlauncher.ink/howto updated: 2026-10-17 --- # Prism Launcher How-To Tutorials Step-by-step fixes for Exit Code 1 and -1, installing Iris/Complementary shaders, importing MultiMC folders, and adding offline accounts. ## Facts (2026-10-17) - **Section:** How-to - **Platform:** Windows 10 & Windows 11 (x64 / ARM64) - **Mod Platforms:** Modrinth, CurseForge, FTB, Technic, ATLauncher - **Installer:** Available at /download ## How Prism Launcher How-To Tutorials works on Windows Step-by-step fixes for Exit Code 1 and -1, installing Iris/Complementary shaders, importing MultiMC folders, and adding offline accounts. Practical task guides for everyday Minecraft modding, troubleshooting, and instance maintenance on Windows. Prism Launcher is a fast, lightweight C++/Qt launcher that keeps every Minecraft profile in its own isolated instance folder, with zero ads and no background bloatware. Get the Windows installer or portable ZIP from [/download](https://prismlauncher.ink/download), or dive into the guides linked below. ## Key advantages for modded Minecraft - **One-Click Mod Loaders:** Switch between [Fabric, NeoForge, Forge, and Quilt](https://prismlauncher.ink/loaders) inside any instance's Version tab. - **Built-in Mod & Modpack Browser:** Search and update [Modrinth and CurseForge modpacks](https://prismlauncher.ink/modpacks), shaders, and resource packs directly inside the app. - **Automatic Java Management:** Pair [Java 21, Java 17, and Java 8](https://prismlauncher.ink/java) per instance so modern 1.21 packs and classic 1.12.2 packs both launch cleanly. ## Pages in Prism Launcher How-To Tutorials - [How to Fix Minecraft Exit Code 1 & Exit Code -1 in Prism Launcher](https://prismlauncher.ink/howto/fix-minecraft-exit-code-1-prism-launcher) — Practical Windows guide for "prism launcher exit code 1 fix": instance setup, Java configuration, and mod management in Prism Launcher. - [How to Install Shaders (Iris + Complementary / BSL) in Prism Launcher](https://prismlauncher.ink/howto/how-to-install-shaders-iris-complementary-prism) — Practical Windows guide for "how to install shaders in prism launcher": instance setup, Java configuration, and mod management in Prism Launcher. - [How to Read the Prism Launcher Log & Share a Crash Link via mclo.gs](https://prismlauncher.ink/howto/how-to-read-and-share-crash-logs-mclogs) — Practical Windows guide for "prism launcher upload crash log mclo.gs": instance setup, Java configuration, and mod management in Prism Launcher. - [Fix 'Failed to Login: Invalid Session' or Expired Microsoft Token](https://prismlauncher.ink/howto/fix-microsoft-account-session-expired-relogin) — Practical Windows guide for "prism launcher session expired failed to login": instance setup, Java configuration, and mod management in Prism Launcher. - [Force Prism Launcher & javaw.exe to Use Your Dedicated NVIDIA or AMD GPU](https://prismlauncher.ink/howto/use-dedicated-nvidia-amd-gpu-for-javaw-windows) — Practical Windows guide for "minecraft using integrated graphics prism launcher fix": instance setup, Java configuration, and mod management in Prism Launcher. - [How to Host a Modded LAN or Essential/e4mc World in Prism Launcher](https://prismlauncher.ink/howto/play-lan-multiplayer-with-prism-launcher-mods) — Practical Windows guide for "how to play lan on prism launcher": instance setup, Java configuration, and mod management in Prism Launcher. - [How to Upload a Custom Minecraft Skin or Equip Capes in Prism Launcher](https://prismlauncher.ink/howto/change-minecraft-skin-and-cape-in-prism-launcher) — Practical Windows guide for "change skin in prism launcher": instance setup, Java configuration, and mod management in Prism Launcher. - [Fix Missing Sound or Audio Device Switching in Minecraft via Prism Launcher](https://prismlauncher.ink/howto/fix-openal-audio-no-sound-in-minecraft-prism) — Practical Windows guide for "prism launcher no sound in minecraft fix": instance setup, Java configuration, and mod management in Prism Launcher. - [Prism Launcher Exe](https://prismlauncher.ink/howto/prism-exe) — "prism exe" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. - [Prism Launcher Zip](https://prismlauncher.ink/howto/prism-zip) — "prism zip" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. - [Prism Launcher Steam Deck](https://prismlauncher.ink/howto/prism-steam-deck) — "prism steam deck" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. - [Prism Launcher Winget](https://prismlauncher.ink/howto/prism-winget) — "prism winget" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. - [Winget Prism Launcher Launcher](https://prismlauncher.ink/howto/winget-prism-launcher) — "winget prism launcher" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. - [Scoop Prism Launcher](https://prismlauncher.ink/howto/scoop-prismlauncher) — "scoop prismlauncher" is a real Prism Launcher search. Install the launcher, pick Java per instance, then add a pack or mods. ## FAQ ### Where do I download Prism Launcher for Windows? Download the Windows installer or portable package directly from [/download](https://prismlauncher.ink/download) on this host. ### Does Prism Launcher work with both Modrinth and CurseForge? Yes. You can install complete modpacks or mix individual mods from both Modrinth and CurseForge inside the same instance. ## Related - [How to Fix Minecraft Exit Code 1 & Exit Code -1 in Prism Launcher](https://prismlauncher.ink/howto/fix-minecraft-exit-code-1-prism-launcher) - [How to Install Shaders (Iris + Complementary / BSL) in Prism Launcher](https://prismlauncher.ink/howto/how-to-install-shaders-iris-complementary-prism) - [How to Read the Prism Launcher Log & Share a Crash Link via mclo.gs](https://prismlauncher.ink/howto/how-to-read-and-share-crash-logs-mclogs) - [Fix 'Failed to Login: Invalid Session' or Expired Microsoft Token](https://prismlauncher.ink/howto/fix-microsoft-account-session-expired-relogin) - [Force Prism Launcher & javaw.exe to Use Your Dedicated NVIDIA or AMD GPU](https://prismlauncher.ink/howto/use-dedicated-nvidia-amd-gpu-for-javaw-windows) ## Download Free and open source: [Download Prism Launcher](https://prismlauncher.ink/download) Markdown mirror: https://prismlauncher.ink/howto.md